Add option hooks.diffopts to customize change summary in post-receive-email
Add option hooks.diffopts to customize change summary in post-receive-email

This makes it easy to customize the git diff-tree options, for example
to include -p to include inline diffs.

It defaults to the current options "--stat --summary --find-copies-harder"
and thus is backward-compatible.

Signed-off-by: Jon Jensen <44f878afe53efc66b76772bd845eb65944ed8232@endpoint.com>
Improved-by: Junio C Hamano <a6723cc3f76163bf7adb636a73ac3b0ceb3e6b9b@pobox.com>
Signed-off-by: Junio C Hamano <a6723cc3f76163bf7adb636a73ac3b0ceb3e6b9b@pobox.com>

destenson/git,destenson/git,destenson/git,destenson/git,destenson/git,destenson/git,destenson/git,destenson/git